31438966 has 8 divisors (see below), whose sum is σ = 50786064. Its totient is φ = 14510280.

The previous prime is 31438963. The next prime is 31438993. The reversal of 31438966 is 66983413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31438963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604570 + ... + 604621.

It is an arithmetic number, because the mean of its divisors is an integer number (6348258).

Almost surely, 2^31438966 is an apocalyptic number.

31438966 is a deficient number, since it is larger than the sum of its proper divisors (19347098).

31438966 is a wasteful number, since it uses less digits than its factorization.

31438966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209206.

The product of its digits is 93312, while the sum is 40.

The square root of 31438966 is about 5607.0461028959. The cubic root of 31438966 is about 315.6138730319.

The spelling of 31438966 in words is "thirty-one million, four hundred thirty-eight thousand, nine hundred sixty-six".